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Massachusetts Comprehensive Assessment System

2011, Grade 8 Science and Technology/Engineering

  Question 21: Open-Response  
The diagram below shows three main layers that compose Earth. The layers are labeled X, Y, and Z.
Diagram of three layers of Earth
  1. Identify each of the three layers of Earth (X, Y, and Z) labeled in the diagram.
  2. Describe one characteristic of the layer labeled X.
  3. Describe one characteristic of the layer labeled Y.
  4. Describe one way that the layer labeled Y interacts with the layer labeled Z.

Scoring Guide and Sample Student Work
Select a score point in the table below to view the sample student response.

ScoreDescription
4 The response demonstrates a thorough understanding of the layers of Earth. The response correctly identifies the three layers (X, Y, and Z) labeled in the diagram. The response clearly describes one characteristic of the layer labeled X and one characteristic of the layer labeled Y. The response clearly describes one way that the layer labeled Y interacts with the layer labeled Z.
4
3
The response demonstrates a general understanding of the layers of Earth, including the lithosphere, the hot convecting mantle, and the dense metallic core.
2
The response demonstrates a limited understanding of the layers of Earth, including the lithosphere, the hot convecting mantle, and the dense metallic core.
1
The response demonstrates a minimal understanding of the layers of Earth, including the lithosphere, the hot convecting mantle, and the dense metallic core.
0
The response is incorrect or contains some correct work that is irrelevant to the skill or concept being measured.

Note: There are 2 sample student responses for Score Point 4.

Grade 8 Science and Technology/Engineering

Question 11: Technology/Engineering
Question 21: Earth and Space Science

Return to the MCAS 2011 Student Work Directory



Last Updated: November 12, 2012
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